Lyman h



(NoModel.)

' L. H. COBB.

DUST PROOF BALL BEARING POR BICYGLBS.

No. 589,204. Patented Aug. 31, 1897.y

WITNESS/58:

UNITED STATES PATENT OFFICE.

LYMAN H. COBB, OE PORTLAND, MAINE, AssIcNOR TO THE LOvELL CYCLE AND ETHER MOTOR COMPANY, OE SAME PLACE.

DUST-PROOF BALL-BEARING BICYCLES.

SPECIFICATION forming part of Letters Patent No. 589,204, dated August 3l, 1897.

Application flied December 9, 1896. Serial No. 615,026. (No model.)

T0 all whom, t may concern:

Be it known that I, LYMAN II. COBB, of Portland, in the county of Cumberland and State of Maine, have invented an Improved Dust-Proof Ball-Bearing for Bicycles or other Vehicles, of which the following is a speci.

cation, reference being had to the accompanying drawings, in which- Figure l is asection of my improved bearing. Fig. 2 is a section of the common form of a dust-proof ball-bearing.

My invention consists in the form and proportion of the part-s of a ball-bearing which is arranged to form an annular chamber surrounding the bearin g capable of receiving and retaining fibrous material.

In Fig.,2 is shown in section the ordinary form of ball-bearing in which dust is partially excluded from the chamber formed by the cone B and the ball-,case C by means of a felt- Washer X; but the effect of the Washer X is only partial, for it is obvious that the natural wear of the parts must soon produce a space between the ball-case C and the Washer X.

In the drawings, Fig. 1, A is the aXle of the bicycle, on which the hub B turns. The hub .B is provided with the usual ball-case C.

The cone D is screwed onto the axle A, and, with the ball-case, forms the bearings for the balls l) b. The cone is held in place on the axle by check-nut d. e

In my. improved ball-bearing I substitute for the Washer X, of felt, a mass of fibrous 'inateriah as wool, and in order to accomplish ameter of ring E is such that it just clears ball-case C. It will now be obvious that the end of cone D and ring E form an annular chamber of the greatest possible capacity, admirably adapted to retain packing material and to provent it from working out of place, and the outer edges D of the cone overlapping in such a fashion as to make the entering of dust difcult.

In a ball-bearing the combination of cone D having a trough-shaped base D; a ballcase-O and trough-shaped ring E, all arranged as described.

- 'LYMAN H. COBB.

Witnesses:

LIONEL COBB, GUY W. DAvIs. 

